|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials 2021
||Effects of Basicity, FeO and TiO2 on Phase Transformation and Viscosity of TiO2-bearing Primary Slag in Blast Furnace
||Yapeng Zhang, Dongqing Wang, Shaoguo Chen, Liu Zhengjian, Wen Pan, Zhixing Zhao
|On-Site Speaker (Planned)
Characteristics and behaviors of primary slag are of central importance for cohesive zone. This work focuses on phase transformation and viscosities of CaO-SiO2-Al2O3-MgO-FeO-TiO2 slag (TiO2=4~16 wt.%, CaO/SiO2=1.1~1.5, FeO=5~25 wt.%). The melting process of TiO2 bearing primary slag can be divided into three stages. With the increase of binary basicity (from 1.2 to 1.5), the viscosities of primary slag are at the same level (above 1674 K), but the Tbr increases 40 K with it. FeO can decrease both viscosity and Tbr. Tbr decreases 87 K with FeO content varing from 5 to 25 wt.%. When the temperature is lower than Tbr, TiO2-bearing phases (titania spinel and perovskite) start to precipitate, leading to the dramatic increase of viscosity. Tbr increases from1578 K to 1671 K when TiO2 content varies from 4 to 16 wt.%. The effects of TiO2 on FT and Tbr are the same as binary basicity.